MI 867 A perforated

            SG 850

       MI 867 B imperforated

       MI 913

       SG 1136

       MI 917

       SG 1140

       MI 461

       SC 452

       MI SS 198

       MI 806

       SG 747

       YV 619

With such an acute angle in the knees it is impossible to

exert full power on the stretcher - shins should not

exceed the vertical position at the beginning of the stroke

       MI 1491

       SG 1443